. Five hundred
grams dried ground seed, pulp, or whole fruit (seed+pulp)
of longan were extracted three times with 2 l of hot water
(70–75 °C) for 1 h at each time. The extracts were then filtered
and combined. The water extracts were then concentrated
and dried using freeze-dryer (for pulp as it contained
high sugar) and spray-dryer (1% lactose was added in seed
extract and spray dried at 80 °C/120 °C).